The circumference of an isosceles triangle a triangle with equal sides is known to be 28 cm

Because it is only said that one side is 3 2 times longer than the other side, I don't know whether it is isosceles or bottom length, so it is divided into two cases.

1) Let the isosceles edge length be x, then the bottom edge is 3 2x

x+x+3/2x=28

x=8 So the waist is 8 and the bottom is 12

2) Set the bottom edge length x, then the waist length 3 2x

x+3/2x+3/2x=28

x=7 So the bottom edge is 7 long, and the waist is long.

Let the length of the two sides be x. It's 3 2x without waiting for one side.

x+x+3/2x=28

x=8A: The length of each side of an isosceles triangle is 8cm, 8cm, 12cm

One side of it is 3 2 times longer than the other, and there are two possibilities:

1) The length of one waist is 3 2 of the length of the bottom edge.

Bottom length: 28 (1+3 2*2)=28 4=7cm waist length: (28-7) 2=

2) The bottom edge length is a waist length of 3 2.

1. Waist length: 28 (1*2+3 2)=28 7 2=8cmBottom length: 28-8*2=12cm

If one side of the isosceles triangle is x long, there are two cases.

1：x+x+3/2x=28

x=8,3/2x=12

2:3/2x+3/2x+x=28

3/2x=21/2,x=7

Let the length of the other side be xcm

When the other side is waist-length x+x+ x=8 so the waist is 8cm and the bottom edge is 12

When the other side is the bottom edge x=7 so the waist is 7cm, and the bottom edge is.

7 Let the short side be x, then the long side is x+( x=7

Let the base edge of the isosceles triangle be 3x and the waist of the isosceles triangle be 2x

3x+2x+2x=28

x = 4, the bottom edge of the equilimb waist triangle is 12cm, and the thickness of the waist is 8cm

If the bottom bridge is out of length=8 cm, then waist length = (28-8) 2=10 cm;

If the waist length = 8cm, then the bottom edge length = 28-8*2 = 12 cm, so the three sides of this pure elimination triangle are 10cm, 10cm, 8cm or 8cm, 8cm, 12cm

Set the waist length to x cm.

Perimeter = x + x + 3 2x

7/2x=28

x = 8 cm.

The bottom edge is 28-8-8 = 12 cm.

28-6) 2=22 2=11 cm Follow-up: What is the length of the two-year-old trembling side? : 11 cm on each side, 11x2 = 22 cm on both sides. Chase Bore: Oh, thank you for the hole.

Solution: When the waist length is 8 cm.

The length of the bottom edge is: 28 8 2 12 cm.

The other two sides of the triangle are 8 cm and 12 cm long, respectively.

When the bottom edge is 8 cm long.

The waist length is: 28 8 2 10 cm.

The other two sides of the triangle are 10 cm and 10 cm long, respectively.

(28-8) 2=10cm, then the length of the other two sides is 10cm

28-8 2 = 12cm, then the length of the other two sides is 8cm and 12cm respectively

1.If 8cm is the base, the other two sides are 10cm, and a triangle can be formed.

2.If 8CN is the waist, the other two sides are 8cm and 12cm, which can form a triangle.

Solution:1Let the bottom edge length be x and the waist length be 3x, and the column equation is as follows:

x+3x+3x=28

7x=28x=4, so the bottom edge is 4 cm, and the waist length is 12 cm.

2.If the side with a length of 6 cm is the bottom edge, then the waist length is: (28-6) 2=11 cm If the edge with a length of 6 cm is the waist, then the length of the bottom edge is:

28-6*2=16 cm, but when the bottom edge is 16 cm and the waist is 6 cm, an isosceles triangle cannot be formed, so there is no such triangle.

Therefore, the circumference of an isosceles triangle is 28 cm, and one of the sides is known to be 6 cm long, and the length of the other two sides is 11 cm.

1.Bottom = 28 (1 + 3 + 3) = 4 cm.

Waist length = (28-4) 2 = 12 cm.

centimeters for the base. Waist = (28-6) 2 = 11 cm.

Solution 1: Set the bottom length to x

2*3x+x=28

x=4Solution 2: Set the base length to x

2*6+x=28

Let the waist length be x cm, then the bottom is (x+8) or (x-8) or (8-x)3x=12x=4

Bottom: 4+8=12

The sum of the two waists is less than the bottom edge of 12, which does not fit the topic and is discarded.

2. 2x+x-8=20

3x=28x=28/3

Bottom: 28 3-8 = 4 3

3. 2x+8-x=20

x=12 bottom: 8-12=-4 is not on topic, discard.

So: the triangle waist is 28 3cm, the bottom: 4 3cm

The isosceles triangle is only 8 centimeters on both sides There are two cases:

1 Waist - Bottom = 8 2 Bottom - Waist = 8

Let the waist length be x, then there is: 1 2x+ x-8=20 x=28 3 The three sides are 28 3 28 3 4 3

2 2x+x+8=20 x=4 The length of the three sides is 4 4 12, where 1 conforms to the property of the trilateral relationship of the triangle, the sum of the lengths of any two sides is greater than the third pass, and the difference between the two sides is less than the third pass.

And the sum of 2 waist 4+4=8 12 is less than the length of the base, so 2 does not meet the requirements.

Then the three sides are 28 3 28 3 4 3